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The Supertech intake/exhaust valve guide for Mazda 2.0L FS engines is supplied to suit that cylinder head application. The description indicates compatibility with both intake and exhaust positions; use the correct guide for each stem size and location. As with any guide, verify the FS engine variant and stem clearance prior to installation to ensure correct fit and operation.
Supertech Mazda 2.0L FS Intake/Exhaust Valve Guide
